Parquette flooring blocks, 3 inch by 9 inch. We have a semi-circle of them inside the front door. They're "engineered wood", with oak surface layer. The stuff has been fine for the 28 years we've lived here, and may have been there for 12 years before that. But for a few years we've had a big oval rag rug there. Oops; discovered a few weeks ago that we let a wet spot get trapped, and 16 pieces got seriously delaminated. Went to Home Depot to look about some. Then went to Lowe's and Menards to be sure. Hasn't been made for years. Fortunately my table saw is big enough to cut 3" pieces down to 3/8ths thickness, and I have a router to do little edge bevels like the originals. Someone did miss one trick, as they failed to discontinue the wood stain that matches reasonably well. I got 10 blocks out of the first oak board I bought; didn't try to buy for the whole job until I determined that I could make credible replacements.